The basic organizational structure of the human body is...
the nucleus
the cell
energy
How many cells are in the human body?
75 billion
75 trillion
100 billion
100 trillion
Cell size is measured in...
nanometers
micrometers
picometers
kilometers
What is it called when cells specialize?
differentiation
specialization
diffusion
filtration
What does differentiation do to a cell?
change the size
change the shape
change the function
change the color
Which is not a major part of a composite cell?
nucleus
cytoplasm
chromosome
cell membrane
The nucleus is the brain of the cell
Cytokinesis is the fluid of the cell and contains cytosol.
Cell membrane is the innermost part of a cell
Cholesterol stabilizes the membrane
Proteins act as
receptors
enzymes
CAMS
self-markers
The cell membrane is also called the Plasma membrane
The plasma membrane chooses what goes in and out of the cell
The cell membrane allows everything into the cell
The phospholipid bilayer has water-soluble tails
The water-soluble heads of the phospholipid bilayer are hydrophilic
CAMs are Cell Adenosine Molecules
What allows white blood cells to "anchor"?
selectin
integrin
cilia
flagellum
What allows white blood cells to enter through capillary walls?
CAMs...
guide cells on the move
are important for growth of embryonic tissue
are important for growth of nerve cells
contain cilia
Cytoskeleton forms supportive framework and is made of protein rods and tubules.
The Endoplasmic Reticulum...
is connected, has membrane bound sacs canals and vesicles
contains a rough and smooth
is a transport system
is for the processing or synthesizing of protein
The rough ER is studded with proteins
Ribosomes are only connected to the ER
The golgi apparatus modifies, packages, and delivers proteins
Mitochondria generate energy
Centrosomes are NOT
two rod like centrioles
used to produce cilia and flagella
distributers of chromosomes during cell division
enzyme-containing sacs
Lysosomes and peroxisomes are both enzyme-containing sacs
Lysosomes...
digest worn out cell parts or unwanted substances
break down organic molecules
used to produce cilia
used to produce flagellum
Cilia are short hair-like projections
Flagellum are short hair-like projections
Cilia are NOT...
short hair-like projections
used to propel substances on cell surface
mainly located in the respiratory tract
used to provide motility to sperm
Microfilaments and microtubules...
are thin rods and tubules
support cytoplasm
allow for movement of organelles
are part of cytoskeleton
The cell nucleus contains...
nuclear envelope
ribosomes
nucleolus
chromatin
The nuclear envelope has a porous double membrane and separates nucleoplasm from cytoplasm
The nucleolus is a dense collection of DNA and proteins.
The nucleolus produces ribosomes
Chromatin is fibers of DNA and proteins
Chromatin stores info for the synthesis of proteins
